It ought to do a better job of explaining that there are specific words it's looking for. Originally I did explore the game you thought that this game was — create any 3 words using all the loose tiles — but the problem is, there are around 12K five-letter words in standard word game play. My game has an imperfect list of less than 33% of these that can be recognized by most people. It would be too easy to guess an acceptable word, only to have the remaining words technically legal, but not among the remaining guessable words, and worse, possibly offensive. If I limit it to only the guessable words, then for many people, words they reasonably expected to be accepted would be inexplicably rejected.